no, lol. i've watched dota/dota 2 tournaments, talked to a fuckton of dota players about the game and i have like 30 hours logged in dota 2. i'm not a pro by any stretch of the imagination, but i can tell just off my experience that dota is way less snowbally. its mechanics goes both ways unlike league where you are able to sustain a lead quite well

although in league's defense someone posted updated stats of the NA regionals this weekends and like 45% of the matches were comebacks. it completely destroyed that dumb stat some dude posted on TL. even still, top lane is cancer.

i'm assuming you're new to the game so i highly doubt anyone at your skill level knows how to zone and freeze lanes so stay in exp range of creeps as much as possible. don't spend all game roaming and ganking.

if you were jungling that's kinda normal. theoretically you should be the same level as your duo lane. if you end up behind you're probably failing too many ganks, ganking at the wrong times, being too persistent on ganks (i.e. sitting in a bush for 2 minutes waiting for an opportunity) or ganking too much and not farming enough.

if you're laning it's just a matter of being in creep range as often as possible.